LTE Advanced

About: LTE Advanced is a research topic. Over the lifetime, 4055 publications have been published within this topic receiving 74262 citations. The topic is also known as: Long-Term Evolution Advanced & LTE-A.

Design and Evaluation of LTE-Advanced Double Codebook

Abstract: In this paper we address codebook design for LTE-Advanced downlink. In order to meet the peak spectral efficiency requirements of up to 30 bit/s/Hz, LTE-Advanced supports up to eight transmit antennas in downlink, enabling spatial multiplexing transmissions with up to eight parallel streams. In addition to high-order single-user (SU-) MIMO transmissions, LTE-Advanced provides state-of-the-art multi-user (MU-) MIMO support with seamless operation between SU-MIMO and MU-MIMO. Codebook design is the basis of such precoded closed-loop multi-antenna schemes. We investigate multiple options for LTE-Advanced codebook design, providing a solution flexible enough to support both single-user and multi-user operation as well as different base station antenna setups while taking into account practical system design constraints. We provide thorough codebook performance evaluation in realistic LTE-Advanced system scenarios.

A joint resource allocation and link adaptation algorithm with carrier aggregation for 5G LTE-Advanced network

Abstract: Carrier aggregation has been introduced by 3rd Generation Partnership project (3GPP) in order to meet the IMT-Advanced requirements Using carrier aggregation, multiple component carriers with a different bandwidth, dispersed within intra or inter bands can be simultaneously utilised to provide higher data rates, better coverage and lower latency resulting a better user experience However, carrier aggregation functionality requires modification to the radio resource management function of the network In this paper, we propose an efficient resource allocation and link adaptation algorithm to support carrier aggregation functionality for downlink 5G LTE-Advanced (LTE-A) network We consider a non-guaranteed bit rate bearers (best effort traffic), which can be used for non realtime applications such as file downloads Most of the existing work considered resource allocation, component carrier selection and link adaptation as separate problems We define a joint radio resource management problem with carrier aggregation functionality and propose a sub-optimal solution with a low computational complexity Simulation results show clearly that our algorithm outperforms state-of-the-art algorithms

Efficient Mobile Fronthaul Transmission of Multiple LTE-A Signals with 36.86-Gb/s CPRI-Equivalent Data Rate using a Directly-Modulated Laser and Fiber Dispersion Mitigation

Abstract: We experimentally demonstrate the transmission of six 100-MHz-bandwidth LTE-A-like mobile signals with 36.86-Gb/s CPRI-equivalent data rate, simultaneously supporting 5-carrier aggregation, 2×2 MIMO and 3 sectors, over a 40-km SSMF fronthaul using a single 1550-nm directly-modulated laser with a novel dispersion-penalty-mitigation technique.

3GPP long term evolution (LTE)

Abstract: In these theses in common considered objectives of development of the LTE standard and also the advantages of application of this technology, meeting requirements of subscribers and operators of services. The article describe OFDM technology and possibilities of 3GPP standard.

Heterogeneous network in LTE-advanced system

Abstract: This paper provides a thorough analysis of the frequency resource allocation among multi-layers of the intra-RAT (Radio Access Technology) heterogeneous network. From the aspect of the spectrum utilization efficiency, the co-channel heterogeneous network provides higher system capacity, but its control channel coverage and quality is much worse than the orthogonal frequency allocation between macro cell and local cells. Enhancement of co-channel deployment are analyzed and evaluated such as range expansion and the Frequency Division Duplexing (FDM)/Time Division Duplexing (TDM) orthogonal control channel design. As a further step of evolution, an approach with dynamic spectrum sharing among macro cells and local cells are proposed to utilize the spared macro uplink resource in the downlink/uplink traffic asymmetric scenario for hotspot local DL access with well-designed interference management.